Dunno what TOS reason is, but in China red is an auspicious colour and the standard to show profits while green is used for Losses. A bit confusing at first.
%% Color blind a reason ??.OK [ I did not know any broker that does not keep a record of your orders, but I maybe mistaken on that ??] I record mine in a paper notebook also. That maybe why most brokers also use a dash-- for losses+ use numbers also. Can get confused, even if not colorblind. I like a moving average; underlines or overlines price....................................................................... Hope this helps+ it helped me